<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        async function main() {
            let p = new Promise((resolve,reject)=>{
                // resolve('ok');
                reject('error');
            })
            //1. 右侧为promise对象 成功返回值 失败抛出异常
            // let res = await p;
            //2. 右侧为其他类型
            let res2 = await 123;

            try{
                let res3 = await p;
            }catch(e){
                console.log(e);
            }
            // console.log(res);
            console.log(res2);
        }
        main(); 
    </script>
</body>
</html>